aoa.h

/* * Apple Onboard Audio definitions * * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> * * GPL v2, can be found in COPYING. */#ifndef __AOA_H#define __AOA_H#include <asm/prom.h>#include <linux/module.h>#include <sound/core.h>#include <sound/asound.h>#include <sound/control.h>#include "aoa-gpio.h"#include "soundbus/soundbus.h"#define MAX_CODEC_NAME_LEN 32struct aoa_codec {
char name[MAX_CODEC_NAME_LEN];
struct module *owner;
/* called when the fabric wants to init this codec. * Do alsa card manipulations from here. */
int (*init)(struct aoa_codec *codec);
/* called when the fabric is done with the codec. * The alsa card will be cleaned up so don't bother. */
void (*exit)(struct aoa_codec *codec);
/* May be NULL, but can be used by the fabric. * Refcounting is the codec driver's responsibility */struct device_node *node;
/* assigned by fabric before init() is called, points * to the soundbus device. Cannot be NULL. */struct soundbus_dev *soundbus_dev;
/* assigned by the fabric before init() is called, points * to the fabric's gpio runtime record for the relevant * device. */struct gpio_runtime *gpio;
/* assigned by the fabric before init() is called, contains * a codec specific bitmask of what outputs and inputs are * actually connected */
u32 connected;
/* data the fabric can associate with this structure */void *fabric_data;
/* private! */struct list_head list;
struct aoa_fabric *fabric;
};
/* return 0 on success */externint
aoa_codec_register(struct aoa_codec *codec);
externvoid
aoa_codec_unregister(struct aoa_codec *codec);
#define MAX_LAYOUT_NAME_LEN 32struct aoa_fabric {
char name[MAX_LAYOUT_NAME_LEN];
struct module *owner;
/* once codecs register, they are passed here after. * They are of course not initialised, since the * fabric is responsible for initialising some fields * in the codec structure! */
int (*found_codec)(struct aoa_codec *codec);
/* called for each codec when it is removed, * also in the case that aoa_fabric_unregister * is called and all codecs are removed * from this fabric. * Also called if found_codec returned 0 but * the codec couldn't initialise. */
void (*remove_codec)(struct aoa_codec *codec);
/* If found_codec returned 0, and the codec * could be initialised, this is called. */
void (*attached_codec)(struct aoa_codec *codec);
};
/* return 0 on success, -EEXIST if another fabric is * registered, -EALREADY if the same fabric is registered. * Passing NULL can be used to test for the presence * of another fabric, if -EALREADY is returned there is * no other fabric present. * In the case that the function returns -EALREADY * and the fabric passed is not NULL, all codecs * that are not assigned yet are passed to the fabric * again for reconsideration. */externint
aoa_fabric_register(struct aoa_fabric *fabric, struct device *dev);
/* it is vital to call this when the fabric exits! * When calling, the remove_codec will be called * for all codecs, unless it is NULL. */externvoid
aoa_fabric_unregister(struct aoa_fabric *fabric);
/* if for some reason you want to get rid of a codec * before the fabric is removed, use this. * Note that remove_codec is called for it! */externvoid
aoa_fabric_unlink_codec(struct aoa_codec *codec);
/* alsa help methods */struct aoa_card {
struct snd_card *alsa_card;
};
externint aoa_snd_device_new(snd_device_type_t type,
void * device_data, struct snd_device_ops * ops);
externstruct snd_card *aoa_get_card(void);
externint aoa_snd_ctl_add(struct snd_kcontrol* control);
/* GPIO stuff */externstruct gpio_methods *pmf_gpio_methods;
externstruct gpio_methods *ftr_gpio_methods;
/* extern struct gpio_methods *map_gpio_methods; */#endif /* __AOA_H */